Passenger side exhaust pipe directly after the exhaust manifold.
Bank 2 would be the passenger side of the engine, sensor 1 would be the first sensor after the passenger side exhaust manifold. It is best reached from under the vehicle.
That should be the sensor located after the catalytic converter.
Bank 1 sensor 3 would be the O2 sensor after the catalytic converter.
That would be the O2 sensor after the catalytic converter.
Need more info, is this the 4 cylinder or 6 cylinder engine and which sensor on bank 1.
That should be the O2 sensor just before the catalytic converter.
Bank 1, on a 4.3 L engine would be on the drivers side.
Top center of engine, 2.2 or the 4.3 engine.
Assuming this is a V-6, bank 1 sensor 1 would be the first O2 sensor in the exhaust on the drivers side of the engine.
Downstream ... This is after the Catalyst Converter.
The 1994 S10 uses a MAP sensor, not a MAF sensor. We need to know size engine you have in that S10.
Yes